SPID, a prototype for the very high angular resolution camera of the VLT.
Abstract
SPID (SPeckle Imaging by Deconvolution) is a new speckle camera currently under construction. Its high spectral resolution (0.1 nm at 500 nm) and high image quality based upon a double beam, double pass spectrograph opens up new scientific programs. For differential observation of astronomical objects, this instrument gives images in two spectral bandwidths at the same time, the width and the central wavelength of each one being chosen independently. Each image is duplicated in order to be insensitive to the so-called photon-counting hole. SPID also includes a wavefront sensor for post-compensation processing. SPID can be considered as a precursor of the Very High Angular Resolution Camera (VHARC) project for the VLT.
- Publication:
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Science with the VLT
- Pub Date:
- 1995
- Bibcode:
- 1995svlt.confP..75T
- Keywords:
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- Cameras: Spectrographs;
- Cameras: VLT